Science 7 Past Paper PDF - Balanced and Unbalanced Forces

 TO TEACHER JULIE CHANNEL WITH FREE POWERPOINT PRESENTATION SCIENCE 7 THIRD QUARTER- lc 1 (B) Matatag curriculum Balanced and unbalanced forces  CONTENT Balanced and unbalanced forc...

 TO TEACHER JULIE CHANNEL WITH FREE POWERPOINT PRESENTATION SCIENCE 7 THIRD QUARTER- lc 1 (B) Matatag curriculum Balanced and unbalanced forces  CONTENT Balanced and unbalanced forces LEARNING The learners learn that Scientists and engineers STANDARD analyze forces to predict their effects on movement. LEARNING The learners will identify that forces act between COMPETENCY objects and can be measured.  OBJECTIVES By the end of the lesson, the 80 percent of the learners will be able to: 1. Distinguish between balanced and unbalanced forces. 2. Explain the effects of balanced and unbalanced forces on the motion of objects. 3. Appreciate the role of balanced and unbalanced forces in everyday life by answering the reflection of learning. I. Activating Prior Knowledge Short Review The students will identify the what type of forces. GRAVITATIONAL FORCE I. Activating Prior Knowledge Short Review The students will identify the what type of forces. FRICTIONAL FORCE I. Activating Prior Knowledge Short Review The students will identify the what type of forces. TENSION FORCE I. Activating Prior Knowledge Short Review The students will identify the what type of forces. ELECTROSTATIC FORCE I. Activating Prior Knowledge Short Review The students will identify the what type of forces. APPLIED FORCE  B. Establishing Purpose of the Lesson 1. LESSON PURPOSE 1. Distinguish between balanced and unbalanced forces. 2. Explain the effects of balanced and unbalanced forces on the motion of objects. 3. Appreciate the role of balanced and unbalanced forces in everyday life by answering the reflection of learning. B. Establishing Purpose of the Lesson 2. Unlocking Content Vocabulary: Match Type Activity A push or pull that can cause an object to FORCE change its speed, direction, or shape. Forces that act on an object without CONTACT physical contact, such as gravity or magnetism. FORCE Forces that are equal in strength and NON-CONTACT opposite in direction, resulting in no net FORCE force on an object. Forces that act on an object through direct BALANCED physical contact, such as friction or normal FORCES force. C. Developing and Deepening Understanding Balanced and unbalanced forces Balance Forces ▪ When the forces acting on an object are equal in magnitude and opposite in direction, the forces are considered balanced. C. Developing and Deepening Understanding Balanced Forces Examples ▪ Suppose you are pushing a wall, and as expected, the wall does not move and neither do you. It means that you and the wall are exerting a balanced force on each other. C. Developing and Deepening Understanding Balanced Forces Examples ▪ The image shows a game of tug of war between equally matched opponents. Neither of the participating teams can pull the other team towards themselves due to balanced forces. C. Developing and Deepening Understanding Balanced Forces Examples ▪ The image below shows a book resting on a table (the force of gravity is balanced by the force exerted by the table) C. Developing and Deepening Understanding Balanced Forces Examples Balance Forces ▪ When the forces acting on an object are balanced, it means the net force on the object is zero. The forces are equal in magnitude and opposite in direction, so they cancel each other out. C. Developing and Deepening Understanding Balanced Forces Examples Balance Forces ▪ For an object at rest, balanced forces mean the object will remain at rest. The forces acting on it, such as the force of gravity and the normal force from a surface, are equal and opposite, so the object does not accelerate and remains stationary. C. Developing and Deepening Understanding Balanced Forces Examples Balance Forces ▪ For an object in motion, balanced forces mean the object will continue moving at a constant velocity. If the forces acting on the object, such as air resistance and the force propelling it forward, are balanced, the object will not speed up, slow down, or change direction. It will maintain its current speed and trajectory. C. Developing and Deepening Understanding Balanced and unbalanced forces Balance Forces ▪ The key point is that balanced forces result in no change to an object's motion. The object will either stay at rest or continue moving at a constant velocity, as long as the forces acting on it remain balanced. C. Developing and Deepening Understanding Balanced and unbalanced forces Unbalance Forces ▪ When the resultant force acting on a body is not equal to zero, the forces acting on the body are known as unbalanced forces. The body acted upon by unbalanced forces changes its state of motion. C. Developing and Deepening Understanding Balanced and unbalanced forces Unbalance Forces ▪ When the resultant force acting on a body is not equal to zero, the forces acting on the body are known as unbalanced forces. The body acted upon by unbalanced forces changes its state of motion. C. Developing and Deepening Understanding Unbalanced Forces Examples Unbalance Forces ▪ Practically anything that moves is a result of the exertion of unbalanced forces on it. If you kick a football and it moves from one place to another, it means that the unbalanced troops are acting upon it. C. Developing and Deepening Understanding Unbalanced Forces Examples Unbalance Forces ▪ The image shows two people on a seesaw. The person on the right is significantly heavier than the person on the left, and the seesaw is effectively tilted towards him. This is an example of unbalanced forces. C. Developing and Deepening Understanding Differences Between Balanced and Unbalanced Forces Balanced Forces Unbalanced Forces The forces are equal in The forces are unequal in magnitude magnitude It does not cause any Causes change in the state change in the state of of motion of the object. motion of the object. C. Developing and Deepening Understanding Worked Example The students will identify if the given picture is balanced or unbalance forces. Balanced Forces A book resting on a table C. Developing and Deepening Understanding Worked Example The students will identify if the given picture is balanced or unbalance forces. Balanced Forces A person standing still C. Developing and Deepening Understanding Worked Example The students will identify if the given picture is balanced or unbalance forces. Unbalanced Forces A book being pushed across a table C. Developing and Deepening Understanding Worked Example The students will identify if the given picture is balanced or unbalance forces. Balanced Forces A car driving at a constant speed C. Developing and Deepening Understanding Worked Example The students will identify if the given picture is balanced or unbalance forces. Unbalanced Forces A ball being kicked  D. MAKING GENERALIZATION Learners’ Takeaways KWL Chart: Using the graphic organizer, the students will answer the L column or what they have learned about the lesson.  D. MAKING GENERALIZATION Reflection on Learning 1. What is the difference between balanced and unbalanced forces? 2. Provide an example of balanced forces and explain how they affect the motion of an object. 3. Provide an example of unbalanced forces and explain how they affect the motion of an object. E. EVALUATING LEARNING _________ 1. What is the definition of balanced forces? a) Forces that are equal in magnitude and opposite in direction b) Forces that are not equal in magnitude and/or not opposite in direction c) Forces that result in a change in motion d) Forces that cause an object to accelerate E. EVALUATING LEARNING _________ 2. Which of the following is an example of balanced forces? a) A book being pushed across a table b) A ball being kicked c) A book resting on a table d) A car accelerating from a stop E. EVALUATING LEARNING _________ 3. When forces are balanced, the net force on an object is: a) Greater than zero b) Less than zero c) Equal to zero d) Constantly changing E. EVALUATING LEARNING _________ 4. What is the result of balanced forces acting on an object? a) The object remains at rest or continues moving at a constant velocity b) The object accelerates c) The object decelerates d) The object changes direction E. EVALUATING LEARNING _________ 5. Which of the following is an example of unbalanced forces? a) A person standing still b) A car driving at a constant speed c) A box sitting on a frictionless surface d) A skydiver falling through the air E. EVALUATING LEARNING _________ 6. When forces are unbalanced, the object will: a) Remain at rest b) Continue moving at a constant velocity c) Accelerate or decelerate d) Change direction randomly E. EVALUATING LEARNING _________ 7. How do unbalanced forces affect the motion of an object? a) They have no effect on the object's motion b) They cause the object to remain at rest c) They cause the object to move at a constant velocity d) They cause the object to change its speed or direction E. EVALUATING LEARNING _________ 8. Which of the following is a characteristic of balanced forces? a) The net force is greater than zero b) The object will accelerate c) The object will change direction d) The object will remain at rest or continue moving at a constant velocity E. EVALUATING LEARNING _________ 9. In a tug-of-war game, the forces exerted by the two teams are: a) Balanced b) Unbalanced c) Constant d) Random E. EVALUATING LEARNING _________ 10. Which of the following is NOT a consequence of unbalanced forces? a) The object remains at rest b) The object accelerates or decelerates c) The object changes direction d) The object continues moving at a constant velocity E. EVALUATING LEARNING ANSWERS KEY 1. a) Forces that are equal in magnitude and opposite in direction 2. c) A book resting on a table 3. c) Equal to zero 4. a) The object remains at rest or continues moving at a constant velocity 5. d) A skydiver falling through the air 6. c) Accelerate or decelerate 7. d) They cause the object to change its speed or direction 8. d) The object will remain at rest or continue moving at a constant velocity 9. b) Unbalanced 10. a) The object remains at rest  Reference : SCIENCE 7 LESSON EXEMPLAR GCSE Physics Revision “Resolving Forces” Retrieved from https://www.youtube.com/watch?v=8RI2_gJy0L0&list=PL9IouNCPbCx UrQkFLoPwB67nDbhw2NfAO&index=6 The Physics Classroom. Accessed from https://www.physicsclassroom.com/Physics-Interactives/Newtons-La ws/Free-Body Diagrams/Free-Body-Diagram-Interactive Ling, J.S., Sanny, J., & Moebs, B. (2016). University Physics Volume 1. Retrieved from https://openstax.org/details/books/university physics-volume-1 Hewitt, P.G. (2014). Conceptual physics. 12th Ed. Pearson DepEd. (n.d). Project EASE: Integrated Science I Module 7. https://byjus.com/physics/balanced-force/